最低成本DIY视频遥控车方案:ESP32-CAM视频遥控车

DLGG创客DIY
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第五步:

发一些硬件的图片。让人有个直观的认识。


DF的电源模块

5v2A移动电源,必须是用2A来驱动,否则无法工作。

电机驱动的型号不详,某宝里买的-MX1508-2路直流电机驱动模块 正反转 PWM调速 双H桥步进电机迷你超L298N。

小车底盘是自己改装的。


第六步:总体介绍

摄像头小车的设计系统是由ESP32-cam,电机驱动和电源模块来完成的。可以实现小车的前进,后退,左转和右转。开灯,打开伺服等动作,操控起来没有迟滞感,流视频也很流畅。

第七步:连线图

第八步:代码部分的设计

代码部分的WIFI密码等要填你自己的信息。

这个代码是主文件,其它几个支持文件是从样例里直接拷贝的。上图手写ok字样那张上面有支持文件的名称。

/@@*    This sketch is made by gada888    2020-7-27        const char* ssid = "xxxxx";    const char* password = "xxxxx";    #include "esp_camera.h"    #include <wifi.h>    #include "soc/soc.h"    #include "soc/rtc_cntl_reg.h"    // WARNING!!! Make sure that you have either selected ESP32 Wrover Module,    //            or another board which has PSRAM enabled    //CAMERA_MODEL_<a class="decoration-color" href="https://www.icxbk.com/search.html?type=article&page=1&keywords=AI" target="_blank">AI</a>_THINKER    #define PWDN_GPIO_NUM     32    #define RESET_GPIO_NUM    -1    #define XCLK_GPIO_NUM      0    #define SIOD_GPIO_NUM     26    #define SIOC_GPIO_NUM     27    #define Y9_GPIO_NUM       35    #define Y8_GPIO_NUM       34    #define Y7_GPIO_NUM       39    #define Y6_GPIO_NUM       36    #define Y5_GPIO_NUM       21    #define Y4_GPIO_NUM       19    #define Y3_GPIO_NUM       18    #define Y2_GPIO_NUM        5    #define VSYNC_GPIO_NUM    25    #define HREF_GPIO_NUM     23    #define PCLK_GPIO_NUM     22    void startCameraServer();    void setup() {      WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);      Serial.begin(115200);      Serial.setDebugOutput(true);      Serial.println();      camera_config_t config;      config.ledc_channel = LEDC_CHANNEL_0;      config.ledc_timer = LEDC_TIMER_0;      config.pin_d0 = Y2_GPIO_NUM;      config.pin_d1 = Y3_GPIO_NUM;      config.pin_d2 = Y4_GPIO_NUM;      config.pin_d3 = Y5_GPIO_NUM;      config.pin_d4 = Y6_GPIO_NUM;      config.pin_d5 = Y7_GPIO_NUM;      config.pin_d6 = Y8_GPIO_NUM;      config.pin_d7 = Y9_GPIO_NUM;      config.pin_xclk = XCLK_GPIO_NUM;      config.pin_pclk = PCLK_GPIO_NUM;      config.pin_vsync = VSYNC_GPIO_NUM;      config.pin_href = HREF_GPIO_NUM;      config.pin_sscb_sda = SIOD_GPIO_NUM;      config.pin_sscb_scl = SIOC_GPIO_NUM;      config.pin_pwdn = PWDN_GPIO_NUM;      config.pin_reset = RESET_GPIO_NUM;      config.xclk_freq_hz = 20000000;      config.pixel_format = PIXFORMAT_JPEG;      //init with high specs to pre-allocate larger buffers      if(psramFound()){        config.frame_size = FRAMESIZE_UXGA;        config.jpeg_quality = 10;  //0-63 lower number means higher quality        config.fb_count = 2;      } else {        config.frame_size = FRAMESIZE_SVGA;        config.jpeg_quality = 12;  //0-63 lower number means higher quality        config.fb_count = 1;      }      // camera init      esp_err_t err = esp_camera_init(&config);      if (err != ESP_OK) {        Serial.printf("Camera init failed with error 0x%x", err);        delay(1000);        ESP.restart();      }      //drop down frame size for higher initial frame rate      sensor_t * s = esp_camera_sensor_get();      s->set_framesize(s, FRAMESIZE_QVGA);  // UXGA|SXGA|XGA|SVGA|VGA|CIF|QVGA|HQVGA|QQVGA      //Servo      ledcAttachPin(2, 3);        ledcSetup(3, 50, 16);      ledcWrite(3, 4850);      //Flash      ledcAttachPin(4, 4);        ledcSetup(4, 5000, 8);      //Wheel      ledcAttachPin(12, 5);  //You can adjust the speed of the wheel. (gpio12, gpio13)      ledcSetup(5, 5000, 8);            ledcAttachPin(13, 6);      ledcSetup(6, 5000, 8);       ledcWrite(6, 0);         pinMode(15, OUTPUT);  //If I output PWM to GPIO 15 using ledcWrite, it will lose control. Why?      pinMode(14, OUTPUT);        Serial.println("ssid: " + (String)ssid);      Serial.println("password: " + (String)password);      WiFi.begin(ssid, password);      long int StartTime=millis();      while (WiFi.status() != WL_CONNECTED) {          delay(500);          if ((StartTime+10000) < millis()) break;      }      startCameraServer();      char* apssid = "ESP32-CAM";      char* appassword = "12345678";         //AP password require at least 8 characters.      Serial.println("");      Serial.println("WiFi connected");          Serial.print("Camera Ready! Use 'http://");      if (WiFi.status() == WL_CONNECTED) {        Serial.print(WiFi.localIP());        Serial.println("' to connect");        WiFi.softAP((WiFi.localIP().toString()+"_"+(String)apssid).c_str(), appassword);            for (int i=0;i<5;i++) {          ledcWrite(4,10);          delay(200);          ledcWrite(4,0);          delay(200);            }             }      else {        Serial.print(WiFi.softAPIP());        Serial.println("' to connect");        WiFi.softAP((WiFi.softAPIP().toString()+"_"+(String)apssid).c_str(), appassword);            for (int i=0;i<2;i++) {          ledcWrite(4,10);          delay(1000);          ledcWrite(4,0);          delay(1000);            }       }        }    void loop() {      // put your main code here, to run repeatedly:      delay(10000);    }

代码烧录完后,在手机上打开浏览器,在地址栏输入你在Fing软件里看到的ESP32的IP地址,之后便可以看到你想看的html页面了。

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